原文 ubuntu 22.04国内软件源镜像阿里云/163源/清华大学/中科大
首先我们需要先备份Ubuntu官方的软件源，执行以下命令将备份原来的软件源。
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak
阿里云镜像
阿里巴巴开源镜像站，免费提供Linux镜像下载服务，拥有Ubuntu、CentOS、Deepin、MongoDB、Apache、Maven、Composer等多种开源软件镜像源。
此外还提供域名解析DNS、网络授时NTP等服务，致力于为互联网用户提供全面，高效和稳定的基础服务。
复制以下命令即可一键切换到阿里云 ubuntu 22.04镜像：
sudo bash -c "cat << EOF > /etc/apt/sources.list && apt update
deb http://mirrors.aliyun.com/ubuntu/ jammy main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ jammy-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ jammy-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy-backports main restricted universe multiverse
EOF"
中科大镜像 中国科学技术大学开源软件镜像由中国科学技术大学网络信息中心提供支持。
mirrors.ustc.edu.cn是Debian, Ubuntu, Fedora, Archlinux, CentOS等多个发行版的官方源。目前是中国大陆高校访问量最大，收录最全的开源软件镜像。
中国科学技术大学Linux用户协会是由中国科学技术大学在校的GNU/Linux爱好者发起并组成的一个全校性群众团体。
复制以下命令即可一键切换到中科大ubuntu 22.04镜像：
sudo bash -c "cat << EOF > /etc/apt/sources.list && apt update
deb https://mirrors.ustc.edu.cn/ubuntu/ jammy main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ jammy main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ jammy-updates main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ jammy-updates main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ jammy-backports main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ jammy-backports main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ jammy-security main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ jammy-security main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ jammy-proposed main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ jammy-proposed main restricted universe multiverse
EOF"
清华大学镜像
sudo bash -c "cat << EOF > /etc/apt/sources.list && apt update
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-updates main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-updates main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-backports main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-backports main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-security main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-security main restricted universe multiverse
EOF"
